restriction screw节流: reduce expenditure螺旋杆: screw rod; spiral stem螺旋杆: hob; screw rod; screw stake; spiral stem节流螺钉: impedance screw节流螺杆: throttling screw下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:节流螺旋杆，即可在微信中查询翻译
